Butt welding galvanized elbow

Abstract

A butt welding galvanized elbow is characterized by comprising a left elbow half right-angle arc (1) and a right elbow half right-angle arc (2), the left elbow half right-angle arc (1) and the right elbow half right-angle arc (2) are welded into the integrated galvanized elbow in a butting mode. The butt welding galvanized elbow has the advantages that inside and outside welding joint arc welding is performed for the two half right-angle arc work pieces in a punch forming mode in advance in the butting mode to complete welding, and the welding process changes the prior edge landing and withdrawing process.

Description

technical field [0001] The invention relates to a butt welding galvanized elbow, which can be used for designing ventilation pipes, gas delivery pipes and environmental protection ventilation systems. [0002] Background technique [0003] At present, most right-angle elbows are achieved by lapping the edge. For example, right-angle joints used in ventilation ducts. They are all rolled up, which not only wastes a lot of raw materials (galvanized steel sheets), but also makes it difficult to seal the interface due to the existence of the rolled mouth. The right-angle elbow welded by the new technology not only reduces the loss of raw materials, but also improves the sealing performance of the nozzle. [0004] Contents of the invention [0011] The main purpose of the present invention is to provide a butt-welding galvanized elbow which changes the original lap-rolling combination method and adopts a butt-joint method for welding. Technical scheme of the present inven...

AI Technical Summary

Problems solved by technology

They are all rolled up, which not only wastes a lot of raw materials (galvanized steel sheets), but also makes it difficult to seal the joints due to the existence of the rolls.

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